Toshiba V Series User Manual page 14

Chapter 1 Overview
1
2
Features of Optical Shared Hub Units
TC-net 100 is a monitor and control LAN for the Integrated Controllers, which can be
configured using optical fiber transmission lines and twisted-pair cable transmission
lines. The optical shared hub unit is necessary for configuring optical fiber transmission
lines, and connects TC-net 100 stations to the network.
The UTNH23A, which has SNMP for TC-net 100 mounted in it, permits diagnosis of the
ports connected to the optical shared hub unit.
The standard TC-net 100 has dual transmission lines, of which line A is for connecting
UTNH23A and line B for connecting UTNH23B.
The information and control network TC-net 100 has the following features.
• Open
The TC-net 100 is a monitor and control network featuring the open characteristic of
the 100-Mbps Ethernet, collision averting function, and definitive time response.
• Communication service
Communication service covers scan transmission (cyclic broadcast transmission and
reception) for periodic control data transmission and ordinary message transmission.
• Scan transmission has three modes: High-speed mode, medium-speed mode,
and low-speed mode. These modes can be assigned according to the data
refreshing cycle to assure definitive real-time response.
• Message transmission is supported by not only TCP, UDP, and IP but also the
Toshiba standard protocol PCMP.
• High reliability
High-reliability systems can be built by dual transmission line configuration. Electric
or optical transmission lines can be selected.
Note: PCMP is the abbreviation of Process Control Message Protocol.
Monitor and control LAN
Control LAN
Field device LAN
SVR: Server computer; HMI human interface (monitor operating unit); PC: personal computer
S/L/C: Integrated Controller V-Series; RIO: remote I/O
Information and Control Network TC-net 100 Optical Shared Hub Unit UTNH23A/B User's Manual
Higher-Level Information Trunk LAN
SVR
S/L/C
S/L/C
L
Serial I/O bus
Terminal board I/O
I/O, sensor/actuator
Figure 1-2 Position of TC-net 100
HMI
PC
TC-net 100
S/L/C
TN-net 10/20/100, FL-net
S
RIO
Devicenet, TOSLINE-S20/F10
Drive unit